POLLY PIGS

Knapp's unique ultra-seal pig is indeed one of a kind. Designed for demanding applications where only minimal product by-pass can be tolerated, the ultra-seal delivers as promised with the lowest measurable by-pass in the pigging industry.Knapp's manufacturers quality urethane products: flexible pipeline cleaners, polly-cups & discs, polly-cast pipeline cleaners, polly-spheres, and custom casting